Lesson #2 Daigusto Emeral and Lavalval Chain

Once per turn: You can detach 1 Xyz Material from this card to activate 1 of these effects. Target 3 monsters in your Graveyard; shuffle all targets into the Deck, then draw 1 card.Target 1 non-Effect Monster in your Graveyard; Special Summon that target.

Lavalval Chain

1800/1000

Once per turn: You can detach 1 Xyz Material from this card to activate 1 of the following effects:Send 1 card from your Deck to the Graveyard.Choose 1 Monster Card from your Deck and put it on top of your Deck.

After reading the effects. What are some good decks and card combos to use both of those effects.